Carafe and stopper.



A HBINEMA-NN.

GARAFE AND STOPPER.

APPLICATION FILED 'JULY 18,1911.

Patented Apr. 30, 1912.

COLUMBIA PLANmRAPlLw WASHINOTO UNITED STATES PATENT OFFICE.

ALBERT HEINEMANN, OF BERLIN, GERMANY.

CARAFE AND STOPPER.

To all whom it may concern:

Be it known that I, ALBERT HEINEMANN, a citizen of the Empire ofGermany, residing at Berlin, in the Empire of Germany, have invented anew and useful Carafe and Stopper, of which the following is aspecification.

My invention relates to glass carafes and glass stoppers of that kind,in which a rounded thread is provided at the glass stopper and in theneck of the glass bottle, and a packing ring is placed between thecollar of the carafe and a corresponding collar at the stopper.

In order to procure a packing ring free from all hygienic objection,this ring should not be made of india rubber but must consist of cork,since india rubber can not be subjected to the pasteurization and alsoin the course of the pasteurization gives a disagreeable taste to thecontents of the bottle.

With the known closures comprising stoppers and wire springs, which arein general use in Germany, it is not possible to obtain a perfectair-tightness by means of a cork ring, since this ring, althoughpossessing in its softened state a suflicient elasticity, dries upwithin a short time so strongly as to no longer tighten the stopper.

ith the above carafes and stoppers having a rounded thread it would bepossible to employ cork as a packing material, provided that care betaken to prevent the cork ring fro-m sticking to the neck of the bottleon the stopper being unscrewed. However, hitherto with such bottles nocork ring has ever been employed, but an india rubber ring hasinvariably been used, chiefly for the reason, that when the cork ringhas been so tightly compressed during the screwing home of the stopperas to afiord a safe tightness even after drying-up, it will almostinvariably adhere to the neck of the bottle during the unscrewing of thestopper, more particularly if the contents are adhesive, such as beerand the like.

The device of preventing the india rubber ring from turning or shiftingby means of grooves at the stopper above the rounded thread can not beapplied to cork rings for the reason, that, when the cork ring has driedup and the stopper is unscrewed, the cork ring is very apt to get offthe grooves, even if the latter are sharp, because the mass of corkcontracts during drying and Specification of Letters Patent.

Application filed July 18, 1911.

Patented Apr. 30, 1912.

Serial No. 639,080.

consequently the space around the ring in creases. Then the cork ring isapt to adhere to the neck of the carafe or bottle, which under allcircumstances must be avoided.

In order to remove these drawbacks, one improvement according to myinvention consists in providing a means, whereby during the opening ofthe carafe or bottle the cork ring is prevented from leaving the screwedstopper. This means is a second screw-thread for engaging the cork ringand disposed on the stopper between the main screw-thread and thecollar, the pitch of the second thread being opposite to that of themain thread. Then during the unscrewing of the stopper the cork ring cannot get 01f but is pressed more strongly against the collar by screwing.

Another improvement consists in providing the neck of the carafe orbottle at the upper end with an inner annular recess, in which the corkring at the stopper is made to fit. This inner annular recess may alsobe provided in the collar of the stopper or in each of the two collars.

I will now proceed to describe my invention with reference to theaccompanying drawing, in which Figure 1 is an elevation of an improvedglass stopper, the cork ring in its natural state being shown in crosssection, Fig. 2 is an elevation of an improved glass carafe with theimproved stopper, an intermediate part of the neck being broken away andthe upper portion of the neck and the compressed cork ring being shownin section; and Figs. 3 and 4 are vertical sectional views of twomodified forms of the invention.

Similar letters of reference refer to similar parts in both views.

The glass carafe a has in its neck I) a rounded female screw-thread I)and above this an annular recess g. The glass stopper (Z has a roundedmain male screw-thread b, which loosely fits the female screwthread I)in the neck I) of the'b'ot-tle a as usual. Above the main thread I)" thestopper (Z is provided with a second screwthread 0 of a slightly largerdiameter and having a pitch opposite to that of the main thread Z). Theheight of the second thread 0 is nearly equal to the thickness of theemployed cork ring f in its compressed state. As this thickness iscomparatively small,

preferably the pitch of the thread 0 is made smaller than that of themain thread 6. It is an advantage to make the second thread angular inopposition to the rounded main thread 7). The cork ring 1 is firstboiled and then screwed on the second thread 0, until it closely bearsagainst the collar it. As can be seen from Fig. 1, the

packing ring f of cork is in its natural state thicker than the heightof the thread 0. On screwing the stopper (Z into the neck 5, the corkring f fitting the annular recess 9 will be compressed, as is shown atFig. 2. The walls of the recess 9 in the collar 0 serve as an abutmentfor the packing ring f and prevent the latter from all shifting duringthe screwing home of the stopper (Z. When the improved stopper isunscrewed, the cork ring f has the tendency of further screwing on thesecond thread 0 and pressing itself against the collar ii, of thestopper (Z, so that it loosens from the collar 6 of the neck and adheresto that of the stopper.

The improved glass carafe and glass stopper present the importantadvantage, thatthey can be at once subjected to the pasteurization. Thisis not possible with ordinary glass carafes and glass stoppers, betweenwhich india rubber packing rings are inserted. If such bottles arefilled with beer, their stoppers with india rubber rings re quire to bereplaced by ordinary cork stoppers for the pasteurization, since at thehigher tem 'ieratures employed during this process the india rubberrings would tear,

and moreover the hot india rubber wouldgive a still more disagreeabletaste to the beer. Besides this the pasteurization can not be carriedout without auxiliary devices, such as wire slings or iron clamps.l/Vhen an ordinary glass bottle filled with beer or the like and closedwith a screwed glass stopper and a cork insertion between the collars ofboth the bottle neck and the stop per is subjected to thepasteurization, the high temperature and the inner pressure of thecontents of the bottle will cause the cork insertion to be partlyshifted and squeezed out. WVith the improved glass carafe and glassstopper according to my invention, on the contrary, all shifting andsqueezing out of the cork ring is rendered impossible by the annularrecess in the neck, in which the cork ring is compressed. The two largecollars of the bottle neck and the stopper are brought into closeproximity of one another by the screwing home of the stopper, so thatthe compressed cork ring is, so

Vhile hitherto a screwed glass stopper could be tightened only by meansof indiarubber and further the pasteurization of beer and otherbeverages could be efiected only in ordinary glass bottles with corkstoppers, the invention renders it possible to employ the hygienicallybetter cork and to effect the pasteurization in glass bottles withscrewed glass stoppers, and all danger of any shifting or squeezing outof the cork ring under the action of the inner pressure, or of anyleakiness of the closure or of any adhesion of the cork ring to thecollar of the bottle neck is avoided.

I claim:

1. The combination with a glass bottle having a collar at the upper endof its neck and a rounded female thread in its neck, of a glass stopperhaving a collar, a rounded male thread and an opposite thread betweenthe collar and the male thread, and a cork ring fitting the oppositethread of said stopper, the two collars being adapted to compress saidcork ring.

2. The combination with a glass bottle having a collar at the upper endof its neck, and a rounded female thread in its neck, of a glass stopperhaving a collar, a rounded male thread and an opposite thread betweenthe collar and the male thread, and a cork ring fitting the oppositethread of said stopper there being a recess adapted to receive the corkring, the two collars being adapted to compress said cork ring.

3. The combination with a glass bottle having a collar at the upper endof its neck and a rounded female thread in its neck, of a glass stopperhaving a collar with an inner annular recess, a rounded male thread andan opposite thread between the male thread and the bottom of the recess,and a cork ring fitting the opposite thread and the annular recess ofsaid stopper, the two collars being adapted to compress said cork ring.

ALBERT HEINEMANN.

Witnesses:

WOLDEMAR HAUPT, HENRY HASPER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

\\ Washington, D. C.

